This article presents a brief overview of the literature pertaining to the use of objects of reference by people with deaf-blindness. It suggests that the establishment of nonsymbolic object use in appropriate routines may facilitate the acquisition of the symbolic use of objects. (MDM)

This second article in a series on children's artistic learning reviews the developmental process of symbolization and symbol representation by young children and analyzes the symbolism in works by three boys. Practical teaching considerations are discussed. For part one of this series, see the September, 1980 issue of this journal. (SJL)

Factor analytic studies suggest that there are six replicable second order cognitive factors. These six factors lend themselves to being interpreted as aspects of Royce's three ways of knowing: conceptual, perceptual, or symbolical. This view provides a unified explanation of the second and third order factors. (Author/CTM)

Findings from relevant research applying Piaget's theory to mental retardation, psychosis, and autism are reviewed. Many autistic individuals show an arrest in operative functions at the sensorimotor functions. The early arrest interferes with subsequent development of higher-level conceptual, symbolic, and social skills. (Author)